/Engine/Source/Editor/UnrealEd/Public/DragAndDrop/FolderDragDropOp.h
A drag/drop operation when dragging actor folders
class FFolderDragDropOp : public [FDecoratedDragDropOp](API\Editor\UnrealEd\DragAndDrop\FDecoratedDragDropOp)
TArray<FName>
Folders
Array of folders that we are dragging
FFolder::FRootO...
RootObject
Root object of folder (can be invalid)
TWeakObjectPtr<...
World
World to which the folders belong